|Rank|Circuit|Headquarters|Screens|Sites|
|---|---|---|---|---|
|1|Regal Entertainment Group|Knoxville,TN|7,318|574|
|2|AMC Entertainment Inc|Kansas City, MO|4,988|344|
|3|Cinemark Theatres|Plano, TX|4,434|332|
|4|Carmike Cinemas, Inc.|Columbus, GA|2,476|249|
|5|Cineplex Entertainment|Toronto, ON|1,672|136|
|6|Marcus Theatres|Milwaukee, WI|687|55|
|7|Harkins Theatres|Phoenix, AZ|440|31|
|8|National Amusements|Dedham, MA|423|32|
|9|Bow Tie Cinemas|Ridgefield, CT|388|63|
|10|Georgia Theatre Company|St. Simon's Island, GA|326|32|

Question: how many headquarters are based outside of the us?
Answer: 1